That definitely looks like a modification. A backing plate can be seen behind the spider, and this presumably would hold the small ring and attach to the spider. It looks like a very clean job!
There must be an interesting bottom bracket setup as well.
San Diego, CA
-----Original Message----- From: Joe Bunik <firstname.lastname@example.org> To: email@example.com Sent: Sun, 3 Feb 2008 7:32 pm Subject: [CR]Shimano 600 EX arabesque triple?
Just purchased an early '80's Lotus Legend with a crank I am unfamiliar with. Did the Shimano 600 EX Arabesque group crank ever come as a triple, or would this be a custom conversion?:
=- Joe Bunik
Pittsburgh, PA USA